Alomone Labs is pleased to offer a highly specific antibody directed against an epitope of the human multidrug resistance protein 1. Anti-Human ABCB1/MDR1 Antibody (#AMT-021) can be used in western blot analysis. It has been designed to recognize MDR1 from human samples only. The antibody is specific for MDR1 and will not cross-react with the highly homologous MDR3 protein.